This container can be pulled via:
  docker pull registry.opensuse.org/isv/rancher/elemental/staging/teal53/media/rancher/elemental-teal/5.3:1.2.2
  docker pull registry.opensuse.org/isv/rancher/elemental/staging/teal53/media/rancher/elemental-teal/5.3:1.2.2-14.59
  docker pull registry.opensuse.org/isv/rancher/elemental/staging/teal53/media/rancher/elemental-teal/5.3:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.